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Flight crew of large transport received TCAS traffic warning and took evasive turn to increase separation.
| Attributes | |
| ACN | 178102 |
| Time | |
| Date | 199105 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 2000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord artcc : zse |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure other departure sid : sid enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : commercial pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 0 flight time total : 2947 flight time type : 0 |
| ASRS Report | 178101 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 125 flight time total : 25000 flight time type : 12000 |
| ASRS Report | 178101 |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 4000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared for takeoff runway 27L at ord. Our clearance was to turn left to a heading of 220 degrees, climb to an altitude of 5000'. While in the turn, we were told to contact departure control. At about the same time, we received a 'traffic, traffic' alert from our TCAS unit. The 3 crew members tried to establish visibility contact, but due to aircraft attitude (takeoff) and outside visibility conditions were unable to do so. Therefore, referring back to TCAS indicator, we deviated left of assigned heading, as that appeared to be the best course of avoidance.
Original NASA ASRS Text
Title: FLT CREW OF LGT RECEIVED TCAS TRAFFIC WARNING AND TOOK EVASIVE TURN TO INCREASE SEPARATION.
Narrative: WE WERE CLRED FOR TKOF RWY 27L AT ORD. OUR CLRNC WAS TO TURN LEFT TO A HDG OF 220 DEGS, CLB TO AN ALT OF 5000'. WHILE IN THE TURN, WE WERE TOLD TO CONTACT DEP CTL. AT ABOUT THE SAME TIME, WE RECEIVED A 'TFC, TFC' ALERT FROM OUR TCAS UNIT. THE 3 CREW MEMBERS TRIED TO ESTABLISH VIS CONTACT, BUT DUE TO ACFT ATTITUDE (TKOF) AND OUTSIDE VIS CONDITIONS WERE UNABLE TO DO SO. THEREFORE, REFERRING BACK TO TCAS INDICATOR, WE DEVIATED LEFT OF ASSIGNED HDG, AS THAT APPEARED TO BE THE BEST COURSE OF AVOIDANCE.
Data retrieved from NASA's ASRS site as of July 2007 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.